using factorial in probability question

09272017, 02:31 AM
Post: #1




using factorial in probability question
software version 10024
hardware version C I will update later  calculator just purchased a few days ago Problem: what is the probability of 2 people having the same birthday amongst 30 people??? Solution: 1  365! / ((36530)!*365^30) = 0.706316 my answer on the HP Prime is +inf  not good in HOME the highest factorial I can get is 253! before it max out in CAS the highest factorial I can get is 170! before I get +inft in HOME 365! / 253! i get 0 365! / 252! i get 489.03 In CAS 365! / 252! i get a huge number several 100 digits long how can I solve this problem on the HP Prime???? 

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